Pin.



A. UTO.

PIN.

APPLICATION FILED APR. 29, I915.

1 ,1 84,055 Patented May 23, 1916.

a y 61.44. M.

UNITED STATES PATENT OFFICE.

ARPAD UTO, OF CLEVELAND, OHIO, ASSIGNOR 0F ONE-HALF TO CUB-'1 IB. MUELLER, O-F

CLEVELAND, OHIO.

PIN.

Specification of Letters Patent.

Patented. May 23, 1916.

Application filed April 29, 1915. Serial No. 24,702.

To all whom it may concern Be it known that I, ARPAD U'ro, a citizen of the United States, residing at 1898 West Forty-eighth street, in the city of Cleveland and State of Ohio, have invented a new and useful Improvement in Pins, of wh1ch the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

This invention in pins has more particular reference to that type commonly spoken.

of as ordinary pins and which'are provided at opposite ends with a head and a sharp point.

I am well aware of the numerous efforts, inventive and otherwise, which have produced crimped-hair pins and hat pins. These have proven effectively adapted each to its own function. I have discovered, however, that a spiral twist isnot always in itself a guaranty against dislodgment, other than by manipulation, when inserted in a thin and hence pliable textile fabric.

Accordingly the'object of my invention is to so certainly, even if slightly, improve the earlier conception that an absolute security of insertion becomes assured. This I have accomplished by substituting for the twist not only a zig-zag portion wholly disposed in a given plane, but which is moreover flattened and somewhat roughened.

In the drawing: Figure 1 is a side elevation of a pin embodying my invention. Fig. 2 is another side elevation viewed at an angle of ninety degrees from the line of vision of Fig. 1.

My pin comprises a round shank portion 1, at one end a head 2, and at the opposite end a sharp, point 3. 'Intermediately of its ends, the pin is of zig-zag formation, and in the particular exemplification shown involves three inversebends 4 asappears in Fig. 1. Such zig-zag intermediate portion is moreover disposed within a given plane and in fact within the longitudinal plane of the pin as an entirety. This is well shown in Fig. 2. The zig-zag portion is furthermore flattened on opposite sides as by compression to become widened in one direction and narrowed in the transverse direction,

such flattened surface being designated by the reference numeral 5. As an incident to such compression or flattening operation the junction 6 of the arcuate edges 7 of the zigzag portionwith the flattened sides 5 of the zig-zag portion being slightly roughened as purposely illustrated in Fig. 1.

Practice has demonstrated that a pin such as has been described will not offer undue resistance to manual insertionand yet positively preclude its independent dislodgment during the handling of the material in which it has been secured. This advantage is known to be reliably attainable only when the bent portions of the shank are additionally altered in shape by flattening as shown.

I claim:

1. An ordinary toilet pin formed intermediately of its head and point with a zigzag portion, the-latter having a flat side along its entire extent.

'2. A pin having a head, a round shank and a sharp point, said pin furthermore formed with a flattened crimp, the flattened oppositely disposed side surfaces of said crimp lying in substantially parallel planes.

3. An ordinary pin formed intermediately of its ends with a flat zig-zag portion, the edges of the flat surfaces being somewha roughened.

4. A pin comprising a shank of mainly round cross section and having at opposite ends a head and a sharp point, an interjacent portion of said shank being of zig-zag formation, said portion fashioned with flattened sides.

4 5. A pin having a head and a sharp point, said pin furthermore fashioned with a zigzag portion between said head and point, such 'zig-zag' portion being of lesser thickness in a direction perpendicular to the direction of projection of'the bends of such zig-zag portion.

6. A pin having at opposite ends a head and a sharp point and a flat surface between said head and point, such surface being depressed toward the axis, the edges of said surface being additionally roughened.

Signed by me, this twenty-eighth day of April, 1915.

- ARPAD UTO. 

